| Note | ||
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Please note that operations of the Fishing Echo Sounder Simrad EK 60 / EK 80 requires experienced scientific staff on board. The system is not operated by the ship's crew. Announce operations with the Fishing Echo Sounder Simrad EK 60 / EK 80 to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise. Data quality of Fishing Echo Sounder Simrad EK 60 / EK 80 is decreased by operating other Echo Sounders. Repeatable disturbances were detected from simultaneously operating a) POSIDONIA, b) Deep Water Sounder Simrad EA 500 DWS, c) Sonar Doppler Speed Log DOLOG and d) Sediment Echo Sounder Parasound P70. Switch off these Echo Sounders for high data quality. |
Summary
Transducer Frequency:
| Metadata (Metadata Plugin) | ||
|---|---|---|
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18, 38, 70, 120, 200 kHz |
Responsible Persons
Components
| Metadata (Metadata Plugin) | ||
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The system consits of five "split beam" transducers (ES-18, ES-38B, ES-70C, ES-120C, ES-200C) located in the box keel, five General Purpose Transceivers (GPTs) in ??? Geräteraum ??? and a computer with installed data acquisition and processing software ER60 in ??? wissenschaftlichen Arbeitsraum ???. |
38 kHz | 70 kHz | 120 und 200 kHz |
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Subdevices
Position
Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
| Metadata (Metadata Plugin) | ||
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Time synchronising of the computers is regulated via the affiliation to the Windows domain. Additionally, the NMEA-String ZDA is stored in the data files. |
| Metadata (Metadata Plugin) | ||
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The geographical ship's position is transferred to the Master PC together with the NMEA-String and to the data files. There is no centering of the GPS Position to the transducers. |
Rawdata storage on board
| Metadata (Metadata Plugin) | ||
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The data acquisition and processing software ER60 creates rawdata in the following data structure: |
| Metadata list |
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|| root directory | \\polsrv1\data01\fishsounder\... || directory name | CruiseNo \ \\ e.g. \\ ANT25_3\ || file name | CruiseNo-Dyyyymmdd-Thhmmss.raw \\ with: \\ yyyy = year \\ mm = month \\ dd = day \\ hh = hour \\ mm = minute \\ ss = second \\ e.g. \\ ANT25_3-D20090113-T144735.raw || |
| Metadata list |
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|| Data volume (MB per day) ca | 3500 || || Number of files per day ca | 100 || |
Dship
| Metadata (Metadata Plugin) | ||
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No data transfer to DShip. |
Data archiving on land
| Metadata (Metadata Plugin) | ||
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After the cruise, the operator transfers the measurement data along with required meta data to AWI after consultaion with the data scientist and AWI Logistics. Then, the data (including meta data) can be extracted from https://www.pangaea.de/ (for authorized users only). |
| Metadata list |
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|| File format(s) | ??? || || Calibration certificates | ??? || |